Dish-washing machine



United StateS Patent Giuseppe Bfono, v. 1o Fo1vio Tesff 49, Man, Ifa1y Ef!ed Aog. 9, 1960, Sef. No. 48,501 Clain1S pffofify, 2 io2ffon Ifa1y Apf. 14, 1950 4 CmS. (C1. 13458) Tho pfesent invention felates to a diSh-vvaShing lTlachine in genefal and to sUch a nfachine haVing fofafy basketS fof the diSheS and othef utenSilS in pafticl11af.

1/IachineS fof vvashing diSheS ond IltensilS, vVhich afe knovvn, afe vefy con1plicated in theif opefation and fe quffe, an1ong othef thingS, conStant pefsonal SUpefvision 11ntil theif Wofk iS con1p1eted. This iS a Sefious dfawback, Since the honSevvife has to watch the WaShing nlachine and cannot ottend to othef dofneStio taSks in tho n1eantiffle.

1t iS one object of the pfeSent invention to pfovide a nJaohine, of siInplified deSign, fof v7ashing disheS afld utensilS vv11ich doeS not feqnife constant opefational SUpefviSion.

It is ano01ef obiect of the pfesent inveI1tion to pfo vide a WaShing maChine Which compfiSeS Substantfany a chan1bo fof vaShing and finsing diShes and 11tenSiIS affanged in fotafy baSketS, hot of cold vVatef ietS efnefging ffom xed of aduStab1e eiectof noZzles Which afe affanged inSide tho chafnbef and SUitably inclined in a veftica1 of hofizonfal plane. A Sfflall tarlk fof con taining the washing watef which iS to be heated With appfopfiate thefnloelectfic elenlents is olSo pfovided. Enfthef a pump is affanged fof feeding hot watef f1`om tho smaH fank into the chambef, A SpeCial tnbe with tvo invefse check valves of StOP cockS, opefating a[1t() nlaticany by 1eans of the vatef )feSSfIfe, is oapable of peffofming a cloSed oyc1e of WaSh ing with hot vvatef, to which suitably any type of detefgent haS been added, and of fiI1Sing the diSheS of 11teflSilS With ffesh watef taken ffoIn a conventional vatef supply pipe. A contfol 11nit is pfovided, Which includeS a fotafy can1 and iS designed to svitch off and on, fespectively, in pfedete1 n1ined SequenoeS the fespective cifcuitS inclnding theffno eleotfic feSistanceS fof heating the vVatef in the s1T1al1 taI1k, inoluding those of the lflotof dfiviflg the hot v atef puITlp, as vve11 as the cifcLlitS of an electfically contfolled Stop cock vhich iS appfopfiately disposed in the c()ld vvatef pipe and alSo a SWitch contfolling the electfio motof actuating the nlentioned caIn, dufing the entife washing cycle.

with thiS and othef obiectS in vieW which Will be coIne appafent in the foHovVing detailed deScfiption, the pfosent invof1tion vill bo cleafly undofStood i11 connec tion vvith the accoInPanying dfawings, ifl vVhich= 'HGURE 1 is a side pefSpective vieW of fhe washing Inachine accofding to the pfesent invention, the bas1etS fof the diSheS and utenSils being fefnoved,

FIG. 2 is a ScheInatic pefSpective view of the details of the eleotfic can1 contfol placed outSido tho vvaShing Inac11ine;

fTC 3 is an axial Section of a tube with tvvo invefSe Stop cockS;

=FIG, 4 is an axial Section of the baSket fof holding dishes vvith a plufality of ejectof floZZleS diSpoSed within the waShing and 1inSing ch an1bef, indicated in bfoken lines; and

1 IGS. 5, 6, 7 and 8 disclose axial Soctions and top plan vieVS, feSpectively, of othef en1bodiInentS of dish baskets.

Refeffing now to tho dfawingS, the waShing fnachine compdSes a waShing and finSing chnbef 1 fof the diSheS and 11tenSils placed in baskotS. The lat tef fotate ffeely on a veftical )ivot fod 2 of on a hofizonta1 pivot fod Z, these fodS Z and z being pefn1anently secufed in the chambef 1.

A plufality of fixed of adiustable watef spfaying noz- Zles afo diSpoSed in the chan1bef 1 hofizon tally, vof ticaHy of inolined, vvhich noZzles afo SUitably looated along tnbeS 4 feeding watef into the chafnbef fof Wash ing or finSing.

A SInall to.flk 5 fof heating tho vvashing vvatef is pfefefably diSpoSed below the chaInbef 1 and also the coffe Sponding pUmp 5 fof feeding 11eoted watef into the chano bof 1 and a tube 7 vith tvvo invefSe check valves, the conduits 8, 8 fof the fetL1fn of the heated vvatef, a11(1 the condI1its 9, 9 fof the diSchafge of the finSiflg vvaJtef.

,The finsing vVatef is hoafed in the tank 5 1)y Ineans of theffI1oelectfic fe*sistaffces 10 vvhich afe contfolled by a fhofInoStot 11 appfopfiately insefted in the cifcuit of the feSistanceS 10, The tUbe 7 Which includes tWo in vefse check valveS cofnpfises a tubulaf body (FIG. 3) and a Shaft 13 SUppofts at itS ends the closing oaps 14 and 15 and intefnlediate i ts ends the piStonS 15 and 17, tho caps and the pistons being 1ntegfal vith the Shaft, so aS to close the pipeS 9, 9 fof the diSchafge of the finsing Watef, upon moving the shaft13 axiaHy towafds the left of towafds the fight FIG. 3), by meanS of the pfeSSUfe of the watef in the pipes 18 and 19, fespectively.

In ofde to sec11fe the pfopof opeTation, fhe pistonS 1o and 17 have diffefent dian1etefs, and the innef bofos of the poftions of the tUbe 7 feceiving tho piStonS 15 and 17, feSpectively, afe affanged cofnplementafy to fho dion1etefS of Said piStons. The contfol InoanS f()f the olectfic dfive fof tho `waShing ITlachine iS affanged latef aHy to tho chambef 1 of i11 any othof S1ffab1e poSi ,tion, fof eXan1ple, inSide of a box 20. Tho dfive ooIn pfiseS an electfic fnotof 21 vvith a contfol SWitch Zz and a cam 23 dfiven by the motof Z1 ovef a mechanica1 feduotion geaf 24. 1)ufing rotation in the difection of the affov-F, the can1 23 ShufS off the electfic oifcllits A, B, C pfogfeSSively and aI1tofflatically, vvhich cifcuits inolude a fetUfn vvife M, the fesiStanceS 10, the )np 6 and an electfic opefated Cook Z5 1oCated at the foeding end of the watef soufce pipe 36.

A Switch 25 is affanged in the electfio ci1 cI1if, Which switch Zo is fflanua11y opefated if it iS desifable to pfeheat the watef in the tank 5.

The baSketS fof holding the disheS compfise SUbStan tially a hoHow shaft 27 Which IIlay be ff1onnted ffeely fotatablo on the pivot fods 2, z, fespectively, and one of mofe fackS foceiving the diShes afe Seoufed to the hollOW Shaft in such a position aS to cauSe the basket of basketS to fotate upon the pivot fods Z, 2, when the waShing of finsing Watof stfikeS the disheS due to the inolined poSftion of the nozzloS 3.

/1ccofding to one en1bodifnent of the baskets, the fack fecoiving the diSheS P conlpfises hofizontal bafs 28 affanged at vafiouS veftica1 levelS (FIG. 4), vvhile in accofdance vvith anothef ofnbodifnent a plufality of pliab1e afms 29, Which afe bent obliquely, gffps, by oleal1s of pfongS 30 )fovided oI1 -the ond and inteffnedi ate poftions of the afff1S 29, the edgeS of the diShes. T11e afmS 29 afe Suitably affanged fadiany, aS Shown in FIGS. 5 and 6, and afe fofn1ed to cylindrioal cages hav ing veftical bafS 30.

FIGs, 7 and 8 disoloSe an en1bodifnent whefein a basket With a faok holding the dishes is pfovided, sin1ilaf to the ofnbodiInent disclosed i11 FIGS 5 and 6, but vfith a hofizontally disposed Shaft, to be n1ounted on the hofizonta1 Shaft Z of the chambef 1 (IG. 1).

Aftef having affanged the baskets feceiving the diSheS to be waShed i11 the chambef 1 and aftef having Shut off the svfitch 25 fof pfefninafy heating of the watef in the tank 5, the opefatof tufnS 011 the contfo1 switch 27, thns Stafting the opefation of the cam Z3.

T he can1 33, upon Teaohing the coffesponding poSit1on, stafts tho o1otion of the 1)oInp o which now feeds hot Watef ffon1 the fank s thTough the pipe 35 to the chambef by oleans of the nozzles 3 and siInoltaneoosly through the conduit 19 into the fobo 7 having the doub1e cockS, thos cauSing a displaceolenf of the shaft 13 tovvaTdS the fight and effecting t11e c1oSing of the disoharge pipes 9, 9 by Ineans of the cap 14. 1ofing this ohase of the opefation, the uSed Watef TetfnS into the tank thTough the pi eS 8, 8, So as fo be fed again into the chanber 1 in a continuons oyo1e, as 1ong as the cao1 23 doeS not, during itS Totation, ca11Se the shutting off of fhe cifcoit C Supplyiog cuTTent to the elecfIica11y operated cock zs, thTotlgh vvhich t11e wafeT iS fed froIn the vvatef SouTce pipe 3o in the diTectioo of the affow :to paSS thfough the pipeS 37 and 37. By this arfangement the finSing of the dishes thfoug11 the nozzles 3 is bfought abont. In this phaSe of the opefation the WateT, fed fTom the cold watef Source ipe 3o cannot )aSS iIlto the pllInp o, in view of the Uni diTectiooa1 stop va1ve 38 pfovided in the pipe 37, Whi1e the Tinsing water TunI1ing thfough the pipe 18 canSeS a diSp1aceIneI t of the shaft 13 of the tube 7, towaTdS the 1e-ft, thuS caosing a c1oSng of the ipes 8, 8 fo the fetuTn of the hot Watef and of the same time the opening of the diScharge pipes fof Temoving the Water ffom the chon1beT 1.

T1le Teturn of the caIn 23 to its ofigina1 position canSes tho opening of the circuit Sopo1ying Cuffent to the motof 31 and thus the stopping of the machine, Withouf Teqnif ing any n1anoa1 contfoL A Second chamber 39, diSposed latorany to the Cham bo1 1, to which Chambef 39 Water is SUpp1ied by the pipe 40 by noeanS of additiona1 noZz1eS 3, provideS, if neceS sary, a Second dish fiosiog with cold of pTeheated wateT, vvhich is heated by nleans of snitable e1ectfic feSistanoes (not shown) insefted in the chan1bef 39.

z 1fter each opefation, the used diSh vashing wateT, is TeInoved by olanua1 operation of the dischaTge valve 41 diSpoSed below the tank 5 which diSchaTge valve 41 can a1So be operated autoInatica11y by the cam 23. A f11ing valve fo1 the tank 5 and otheT Supp1eTnentaTy devioeS (I1ot ShoWn) can 1ikevvi Se be opefated by the caTI1 23 i1 a comp1eto cyo1e fof WaShing and TinSing of the disheS and the utensils, inc1Uding foeding of Watof and femoving the used WateT,

Whi1e 1 have disc1oSed sevefa1 eInbodio1ents of the prosent invention, it is to be undefStood that theSe enbodin1enfs are given by eXaIop1e on1y and not in a liolitiI1g SenSe, the scope of the pfeSent inve11tion being (1etoITIIiIled by the obiects and the c1aiIns.

I clain1:

1. A vvaShing nlachine fo1 dShes aI1d utenSils opefat ing antoInadca11y in a c1oSed waShing cyc1e, comprising a chan1beT, a vvash Wate1 conduit and a Tinse wateT condoit dispoSed in Said ohan1bef and a plofality of eieotion nozz1eS Spaced apaft axia11y o1 each of Said conduits fof feeding into said ohamber hot washing watef and cold Tinsig Water, TeSpoctively, a vatef tank diSposed odiacont Said chaInber and electrica1 neanS fof heating the vvatef in said Wate tank, a n havin its in]et Side con1n1uBioating Safd tank, the resSufe side of said pump coInn1onicatng vith Said WSh vatef conduit fol feeding heafed vvatef ffoIn Said tank to Sad one of Said conduitS and, thefeby, tovvaTdS Said eiection noZzleS and into Said chanber, a tube having an inveTSe Stop vale at each end t11efeof, a Shaft aXia11y n1ovable in said tLl be and CarP ing a cap at each of its endS, o11e of said Sfop valveS being olosed by one of said ca S upon 'opening the other of Sad Stop va1veS, said one of Said Stop va1veS being dispoSed in Said vaSh Watef condoit betWeen Said tank and Said chambeT, the latteT inc1oding Said pump, and controning by hydTaulic pressufe the f1ovv of hot vvater into Said chambeT and the othef of Said stop va1veS being diSposed in Said TinSe vvateT conduif and oontro11ing the 11ow of co1d TinSing vvatef info Said chaInber, an e1ectTic notor, a fotary caII1 opeTatively connected with safd e1ectfic motor, e1ectrica1 tin1eT n1eanS operated by Said TotaTy caIn f()T controHing Said Stop vaIveS, the latteT controHing the water 11ow to fovide a hot WateT cifcu1ation vvash Cycle and a frBSh cold wafef rinSe cycle, a cold wateT SUp ly oipe, a Stop oock di'Sposed in said cold Watof sop ply pfpe, and a Tod Tigidly SecuTed i11 said ohaTnbef, of 1eaSt one basket SecuTed to a hoHow Shaft Teceiviog Said rod and n1oonted on the lafteT, Said baSket being adapted fo feceive diShes to be c1eaned, and Said noZZles being directed tovvaTds Said disheS so that opon feedin hot and co1d watef, TeSpectively, to Said noZz1eS Said baSketS rotate opon Said Tod.

2. The waShing Inachine, aS Set fofth in clain1 L Wherein tWo piStons are o1ounted on said Shaft intern1ediate itS endS and axia11y Inovable with Said shaft i11 Said tobe, Said piSfons having diffeTet outer dianletefS and Said tube having boreS of diffeTent in11eT dianefef con1p1enTen tafy to the diaITleter of Said istons, and said invefSe stop va1ves being opefated hydfaulica11y by nTeanS of Said pStonS to Tender opeTative one of Said in erSe Stop va1ves at one tinle.

3. The washing machine, aS Set forth in claim L WheTe i11 said basket coInpriSes a rack having hofizonfal baTS dispoSed para11e1 -to each other at di1feTent veftica1 1eve1S, and Said baTS having gripping pTojections adapted to g1ip Said diShes and to hold Said diSheS betWeen paifs of Said bars.

4. Te vvaShin machine, aS Set forth in claiII1 1, wheTein said baSket coInpfiSes a Tack holding the diSheS and a 1uTaHty of p1iab1e aro1S benf obHque1y and pfongs on eoch of said aTn1S clam Said dishes on Baid aT1S, said aTms being dispoSed Tadia1ly fTom Said ho11ow Shaft fo assllnle a staT foTTnafion, and said basket inc111ding cy1in drical cges dispoSod coaxia11y Wi-th Said honow shaft and coInpTiSing a plora1ity of concentTica11y dspoSed veTtica1 baTS.

1ofefenceS C1fed in the 1ile of this pafent UNITED STATES PATENTS Z,Z3 196 Bi1de Mar., 18, 1941 Z 3o4 438 Bi1de Doo. 8, 1942 Z,575 493 1Ii11ikef Nov. Z0, 1931 FoREIGN PATENTS S07,677 GeTn1any Septo 19, 1930 

